Mercurial > hg
view tests/test-merge9.t @ 30446:b324b4e431e5
posix: give checkexec a fast path; keep the check files and test read only
Before, Mercurial would create a new temporary file every time, stat it, change
its exec mode, stat it again, and delete it. Most of this dance was done to
handle the rare and not-so-essential case of VFAT mounts on unix. The cost of
that was paid by the much more common and important case of using normal file
systems.
Instead, try to create and preserve .hg/cache/checkisexec and
.hg/cache/checknoexec with and without exec flag set. If the files exist and
have correct exec flags set, we can conclude that that file system supports the
exec flag. Best case, the whole exec check can thus be done with two stat
calls. Worst case, we delete the wrong files and check as usual. That will be
because temporary loss of exec bit or on file systems without support for the
exec bit. In that case we check as we did before, with the additional overhead
of one extra stat call.
It is possible that this different test algorithm in some cases on odd file
systems will give different behaviour. Again, I think it will be rare and
special cases and I think it is worth the risk.
test-clone.t happens to show the situation where checkisexec is left behind
from the old style check, while checknoexec only will be created next time a
exec check will be performed.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 14 Jan 2015 01:15:26 +0100 |
parents | 8e6d5b7317e6 |
children | 41ef02ba329b |
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test that we don't interrupt the merge session if a file-level merge failed $ hg init repo $ cd repo $ echo foo > foo $ echo a > bar $ hg ci -Am 'add foo' adding bar adding foo $ hg mv foo baz $ echo b >> bar $ echo quux > quux1 $ hg ci -Am 'mv foo baz' adding quux1 $ hg up -qC 0 $ echo >> foo $ echo c >> bar $ echo quux > quux2 $ hg ci -Am 'change foo' adding quux2 created new head test with the rename on the remote side $ HGMERGE=false hg merge merging bar merging foo and baz to baz merging bar failed! 1 files updated, 1 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ hg resolve -l U bar R baz test with the rename on the local side $ hg up -C 1 3 files updated, 0 files merged, 1 files removed, 0 files unresolved $ HGMERGE=false hg merge merging bar merging baz and foo to baz merging bar failed! 1 files updated, 1 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] show unresolved $ hg resolve -l U bar R baz unmark baz $ hg resolve -u baz show $ hg resolve -l U bar U baz $ hg st M bar M baz M quux2 ? bar.orig re-resolve baz $ hg resolve baz merging baz and foo to baz after resolve $ hg resolve -l U bar R baz resolve all warning $ hg resolve abort: no files or directories specified (use --all to re-merge all unresolved files) [255] resolve all $ hg resolve -a merging bar warning: conflicts while merging bar! (edit, then use 'hg resolve --mark') [1] after $ hg resolve -l U bar R baz $ cd ..